The partial remains have been incorporated into a laneway that runs to the south and southeast of the castle, creating an intriguing blend of medieval fortification and later agricultural use. This old track winds its way down towards what was once a medieval deer park, now preserved as a townland bearing that name. The deer park's boundaries are still marked by stone walls that may well be the original enclosing elements from centuries past.

Historical maps offer tantalising clues about the bawn's original structure. The first edition Ordnance Survey six-inch map shows a small circular building built into the laneway east of the castle, which archaeologists believe may have been a flanking tower that once formed part of the bawn wall surrounding Castle Wetherall. Though this tower has long since been levelled, its ghostly presence can still be detected in the landscape; the laneway wall kicks out at this point, following the footprint of the vanished structure.

The relationship between the castle, its protective bawn, and the medieval deer park below reveals how these Anglo-Norman settlements organised their landscapes. The bawn would have provided immediate protection for the castle and its inhabitants, whilst the deer park served both as a hunting preserve and a symbol of lordly status. Today, these remnants offer a glimpse into how medieval lordships controlled and shaped the Irish countryside, with defensive needs and aristocratic leisure existing side by side in the same compact landscape.